Door closer



rafenfedriune io, 1930Y Y y 1,763,323`

'Fries i ROBERT s. POTTR, OFLGREENWTCH," CONNECTICUT,` AssIGNOR To THN YAL-ii aTOWNE MANUirACTURiNG` COMPANY, or sTAMFOnn, CONNECTICUT i noon CLOSER A Application iiieafirovember 12,1924. serial iiiaUraaies.`

rlhis invention relates to improvements latter being mounted on a boss `10 `on the indoor lioldersand which are particularly under faceof the lever.` j C adaptable for closers of` the i socalled y Thecap member 2 of the casing is proliquid` type, `although the said improvevided with afcentral hub l1` through Which ments may be applied to `other types of the shaft 12 of the closer passes and this hub 55 `closer-s novv` in use.` 1 i is threaded eXteriorlyl to receive the inter- ,An object `of the present invention is to lorly threadedportion of `a friction ring l y provide simple and elicient frictionmeans l 3,`tl1e latter having at its upper edge por* Whichlmay be` applied to door c loserssuch Clon an annular flange 14,. the under face as 110W manufactured and which Oper- Of WlllCll OllSlJlllllGlS'` `it SlllfLCe 15. `60 1 ate automatically, with either a right or a 'llll P01`tl0l} "Qf the @all 2 lying directly left hand door, tohold the door to the debelow the friction ringr113 provides a fricsired extent of open position but permit it .tionsurface 16; In order to guard against to be Closed; upon the ppljcatonof Compu; possibility of any turning movement of the at'ivelyilightpressure.` v i i y D Withtthis and @other objects in view, the the hub ll?` Said Img may be secured to the, y nventionconsi'sts in certain novel features Cap 2 by ;11Ytlllg aS illustrated at 17. of construction and combinations of parts The l'lCl'OIl 111I1g l3"1S @Xeol'ly thread.-V i y as hereinafter setfortli and pointed outlin @Cl and .IQCGIYSS 2m lnteroly threaded, an- `1 20 he Claimg y 1 ular friction plate '18,`-thej thickness of 30 In the accompanying drawings,"4 A said plateibeing appreciably less than the y y Figurl is L plan vjewpartlyinysection distance between the friction surfaces 15 1 1 y showing a door closer in Which the `:im'proveand. 16. 1 The frlctlonplate 1 8 is provided ments are embodiedw i 1 With a plurality 0f peripheralwrecesses or' A partly insection. 1 i i `StllOl 20 Carried bythe main arm 7 isadapt- 1 y y Figure 3 `is a plan View Of the Capmemed to enter. The pin or stud 20passes free-v 1 beiofit-,he Closer.` w i 1 y 1 f1 ly through the lever 7 and the boss 10 so 1Figur1 4" is `ad Sectional View `01j' fthecap `150 be CapliblGOf Sliding DO `01 Olli) Of e1]- "member shown in Figure 3. Y gagement in any one of the recesses or openec y Figur@ 5 ig `plan viewrof the friction ings 19 in the friction plate 18, and said. pi-n f ring` 1 v- 1 or stud is normally held in `such engagei Figur is @Sectional View: f the friction ment by meansof a spring 21 secured at one y ring, i Y y 1 y 1 1 1 y y end totheglever 7` andat` its Qotheiyor free i y Figure 7 is a plan vieWshoWing the annuc nd, entering a notch 22 `inthe upper por- 85 larifrictionplate-` y Y `tion of saidpin` or stud.` A thumb piece 23 f igure 8 is as ctionalvew through said is vsecured to f the spring 211` and depends 1 plate, and 1 y y i .througha hole 2in1 the lever `7, to facili- Figure 9 is a fragmentary sectional vier7 tate the manual operation fof said spring "showing partsxillustrated in Figure 2, on a to Withdraw the pin or studvi20 fromopera- 90 lai`-ge`r`scale` 1 1 tiveirelation tothe friction plate 18` y, y the 1 clraivings, the casing `of a` door 1 `Wth the improvements as lo above decloser is' illustrated at `1 andprov'ided With scribed, thepiii or stud 2O will, as the door aicap member 2 having a flange 3 which emopens, cause the friction plate to turn and i 1 braces thefupperfporton of the casing l. by its threaded connection With the fric- 95 1f* A spring pressedistop ,pin i passes through tion ring, to move toward one or-the other aholekinfthe flange 3 and enters a seat of theifriotion` surfaces 15er 16 (according- "G in the casing 1. 1 i 1 i y 1 i .1 lygas the door is'a right or a left hand one) `The `closer is provided With amainfarm and by frictional engagement with `one "or friction ring after the fsameis appliedto e5 1 Figure 2 is aview partly in elevation and, Openings 19 in any 011e Ofivhicll a paOl 75.

y orlever 7, a ratchet 8 and its p'awl 9,-1-4the thejother ofsaid surfaces, hold 'the door in 109 y y e faces mounted inspaced relation, a friction Mblock, screw` threadedmeans between said frictionsurfaces upon which said friction block is adapted to ride,and meansoperable upon the opening ofthe ldoor to which the closer is applied to cause the friction block to ride on saidV screw threaded means into `binding rictional engagement with a predetermined one of said parallel friction surf` faces. a `1l.Do`or holding means for a door closer assembly comprising` two unyielding friction i surfaces a friction blockeadapted to engage one of said surfaces when the door isopened in one direction, and the other of said sin faces when the door is opened in the oppofsite direction, and means carried by the door closer assembly and operable upon thc e `opening of the door to move saidfriction blockinto one of its engaging positions.

12.` Door holding means for a door closer assembly comprising two parallel friction surfaces coaxially mounted in Xed spaced `relationfa friction block mounted between `said surfaces and adapted to engage one or the otherV of saidwsurfaces dependent upon `the direction of the opening of the door,

and means carried by said door closer assembly and operable upon the opening of the door to move said friction block into e oneof its engagingpositions. I a n e In testimony whereof, I have signed this i .e l e specification.

e `ROBERT s. POTTER. 

